CN110480917A - A kind of extrusion foaming injection (mo(u)lding) machine and injecting method - Google Patents
A kind of extrusion foaming injection (mo(u)lding) machine and injecting method Download PDFInfo
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- CN110480917A CN110480917A CN201810456972.XA CN201810456972A CN110480917A CN 110480917 A CN110480917 A CN 110480917A CN 201810456972 A CN201810456972 A CN 201810456972A CN 110480917 A CN110480917 A CN 110480917A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1701—Component parts, details or accessories; Auxiliary operations using a particular environment during moulding, e.g. moisture-free or dust-free
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1701—Component parts, details or accessories; Auxiliary operations using a particular environment during moulding, e.g. moisture-free or dust-free
- B29C2045/1702—Component parts, details or accessories; Auxiliary operations using a particular environment during moulding, e.g. moisture-free or dust-free dissolving or absorbing a fluid in the plastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76829—Feeding
- B29C2945/76832—Feeding raw materials
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
It includes: feeding unit, the rotary valve connecting with the feeding unit and the first injection cylinder and the second injection cylinder connecting respectively with the rotary valve that the present invention, which provides a kind of extrusion foaming injection (mo(u)lding) machine and injecting method, injection (mo(u)lding) machine,；The rotary valve includes the first station and second station, and when the rotary valve is in first station, the high pressure feedstock in the feeding unit is injected into first injection cylinder through the injection canal of the rotary valve carries out storing；When the rotary valve is in the second station, high pressure feedstock is injected into second injection cylinder through the injection canal and carries out storing, and first injection cylinder, second injection cylinder and the injection canal are in high pressure conditions always.Extrusion foaming injection (mo(u)lding) machine of the present invention is provided with rotary valve and two injection cylinders, and whole injection efficiency is high, is not in foamed phenomenon inside shaping machine set, and the switching control of injecting method and rotary valve station is simple, and injection molding quality is high.
Description
Technical field
The present invention relates to foam injection molding technical field, in particular to a kind of extrusion foaming injection (mo(u)lding) machine and injection side
Method.
Background technique
The type of foaming forming technique and equipment is more and more at present, continues to bring out new technology.Present invention CO2 gas
Foam injection molding is a kind of relatively new injection molding technology, is especially foamed with CO2 other physical, nontoxic, odorless, corrosion-free work
With, do not burn, thermal stability is good, does not chemically react under gaseous state.With it is colourless, tasteless, foaming after will not be in the polymer
The environmental protection characteristics such as residue are left, prospect is extensive, and present invention is mainly used for TPU (thermoplastic polyurethane elastomer) sole hairs at present
Bubble injection moulding unit, the footwear containing (polyurethane) TPU has excellent elasticity and wearability, and light-weight, dress is relaxed
Appropriateness is superior, therefore, especially suitable in the sport footwear of high-grade footwear, playshoes, shoes for walking with vigorous strides.
Sole foaming is injection moulded unit by double rank plastic extruders, rotary valve component, two (double groups) or multiple is injected into
Type machine composition.The integrated artistic process of double groups of injection (mo(u)lding) machines is that double rank plastic extruders are continuously run, and with overcritical gas injection
System, which injects CO2 gas in melting body, to be uniformly mixed.Continuous-stable is fed under extruder high-temperature high-pressure state, automatic rotary valve control
Melt processed flows to first injection cylinder, when reaching setting variable, switches rotary valve, and melt flows to second injection cylinder, and at this time the
One injection cylinder starts to inject, and melt is filled in shoes mould with high speed and high pressure, forms the footwear material of surface skining, intermediate foaming.Until
After second injection cylinder filling to a certain extent, rotary valve turns over and starts to first injection cylinder charge.Recycle this process.It wants
Seek at rotary valve and be in always in injection cylinder high pressure conditions.New demand is not achieved in existing some injection (mo(u)lding) machines.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention is to provide a kind of extrusion foaming injection (mo(u)lding) machine and injecting method, injection mouldings
Machine is provided with rotary valve and two injection cylinders, and extruder can continuously run feed, can effectively prevent foamed phenomenon inside unit
Generation, high temperature and pressure raw material is injected into two injection cylinders by the switching of rotary valve, improves the injection molding of injection (mo(u)lding) machine
Molding efficiency.
(2) technical solution
In order to solve the above technical problems, the present invention provides a kind of extrusion foaming injection (mo(u)lding) machine and injecting method, it is injected into
Type machine includes: feeding unit, the rotary valve connecting with the feeding unit and the first injection cylinder connecting respectively with the rotary valve
With the second injection cylinder；
The rotary valve includes the first station and second station, when the rotary valve is in first station, the feeding list
High pressure mixing material in member is injected into first injection cylinder through the injection canal of the rotary valve carries out storing；At the rotary valve
When the second station, high pressure mixing material is injected into second injection cylinder through the injection canal and carries out storing, described
First injection cylinder, second injection cylinder and the injection canal are in high pressure conditions always.By the rotary valve in the first work
Position and the switching of second station, can recycle to first injection cylinder and second injection cylinder progress storing, described the
While two injection cylinder storings, first injection cylinder can carry out injection molding processing；In the first injection cylinder storing
Meanwhile second injection cylinder can carry out injection molding processing, in whole process, the feeding unit is in continuous fortune always
The state of row work can be recycled uninterruptedly and carry out storing to first injection cylinder and second injection cylinder, the rotary valve,
First injection cylinder, second injection cylinder are in high pressure conditions always, can prevent internal mixture from foaming occur existing
As there are two injection cylinders for setting, carry out interval injection molding, improve the efficiency of injection (mo(u)lding) machine injection molding.
Further, the rotary valve includes rotary valve body and the rotary valve axis that is sleeved on the rotary valve body, and the injection is logical
Road is arranged on the rotary valve axis；The rotary valve body includes the first discharge port for connecting first injection cylinder, send described in connection
The feed inlet of material unit and the second discharge port of connection second injection cylinder；When the rotary valve is in first station,
The injection canal is conducted with the feed inlet and first discharge port respectively, and the high pressure in the feeding unit is mixed at this time
It closes and expects to be injected into first injection cylinder through the injection canal to carry out storing；The rotary valve axis is in the second station
When, the injection canal is conducted with the feed inlet and second discharge port respectively, at this time the height in the feeding unit
Pressure mixture is injected into second injection cylinder through the injection canal carries out storing.
Further, the cross sectional shape of the injection canal is in turning shape, first discharge port and second discharging
Mouth is symmetricly set on rotary valve body two sides, 90 ° of rotation rotary valve axis, the rotary valve from first Switch of working position to
The second station.
Further, the rotary valve is mounted on external workbench, and the workbench bottom is equipped with rack gear seat and drive
Carry-over bar is equipped with the transmission gear engaged with the drive rack on the rotary valve axis, is equipped on the workbench and institute
State the drive cylinder of drive rack connection；It is provided with spacer pin on the rotary valve body, is correspondingly arranged on first on the rotary valve axis
Limit shelves and the second limit shelves；When the rotary valve is in the first station, the spacer pin is resisted against on the first limit shelves；Institute
When stating rotary valve and being in second station, the spacer pin is resisted against on the second limit shelves；The rotary valve axis passes through end cap and lock
Tight nut is located on the rotary valve body, heat insulation is equipped between the workbench and the rotary valve body, the rotary valve is external
Side is equipped with heating plate, is equipped with multiple groups sealing ring between the rotary valve body and the rotary valve axis.
Further, first injection cylinder connects the first injection molding by nozzle；Second injection cylinder passes through spray
Mouth connects the second injection molding；First injection cylinder is identical with the structure of second injection cylinder, first injection cylinder and
The pressure sensor for detecting pressure is separately installed on second injection cylinder.It is high when the rotary valve is in second station
Pressure mixture is injected into second injection cylinder through the injection canal carries out storing, and first injection cylinder passes through spray at this time
Internal high pressure mixing material is injected into progress injection molding processing in first injection molding by mouth；It is corresponding, the rotary valve
When in the first station, high pressure mixing material is injected into first injection cylinder through the injection canal and carries out storing, at this time institute
It states the second injection cylinder internal high pressure mixing material is injected into second injection molding by nozzle and carry out injection molding and add
Work, whole injection molding it is high in machining efficiency.
Further, one end of second injection cylinder is equipped with transfer block and connecting tube, is provided in the transfer block
First passage and second channel；Described first passage one end is connected to the injecting cavity of second injection cylinder, and the other end passes through described
Connecting tube is connected to second discharge port；Injection rod is installed in the injecting cavity, the nozzle is mounted in the transfer block,
The second channel is connected to the nozzle and the injecting cavity；Always high pressure shape is in inside the transfer block and the connecting tube
State.
Further, the feeding unit includes double screw extruder and single screw extrusion machine, the single screw extrusion machine
Connect the feed inlet of the rotary valve；The feeding port connecting with external screw feeding machine is provided on the double screw extruder,
Carbon dioxide mouth is additionally provided on the double screw extruder.
Further, the technical program also provides a kind of injecting method of extrusion foaming injection (mo(u)lding) machine, including walks as follows
It is rapid:
Step 1: raw material is injected in the double screw extruder of injection (mo(u)lding) machine, overcritical gas injection system injection CO2 and original
Material mixing, mixture successively through double screw extruder and single screw extrusion machine, are injected into the rotary valve of injection (mo(u)lding) machine；
Step 2: it controls the rotary valve and is in the first station, the mixture of high temperature and pressure is through the injection canal of the rotary valve
It is injected into the first injection cylinder of injection (mo(u)lding) machine and carries out storing；
Step 3: the rotary valve axis of 90 ° of rotation rotary valves is at second station, the mixture of high temperature and pressure is through institute
The injection canal for stating rotary valve axis, which is injected into the second injection cylinder of injection (mo(u)lding) machine, carries out storing；
Step 4: the nozzle on first injection cylinder is opened, and the mixture of the high temperature and pressure of internal reservoir is injected to
On first injection molding of injection (mo(u)lding) machine；
Step 5: 90 ° of opposite directions rotate the rotary valve axis of the rotary valve, it is made to be in the first station again, high temperature and pressure
Mixture is injected into the first injection cylinder of injection (mo(u)lding) machine through the injection canal of the rotary valve axis and carries out storing；
Step 6: the nozzle on second injection cylinder is opened, and the mixture of the high temperature and pressure of internal reservoir is injected to
On second injection molding of injection (mo(u)lding) machine；
Step 7: step 3 is repeated to step 6.
Further, in the step 3, drive rack is driven by the drive cylinder under injection moulding machine worktable
Make the rotary valve from the first Switch of working position to the to control rotary valve axis rotation with the transmission gear on the rotary valve axis
Two stations.
(3) beneficial effect
Extrusion foaming injection (mo(u)lding) machine of the present invention is provided with rotary valve and two injection cylinders, passes through the first station of rotary valve and second
The switching of station enables extruder to recycle and successively carries out storing into two injection cylinders incessantly, can remain note
Penetrating inside cylinder interior and rotary valve is not in foamed phenomenon inside high pressure conditions, shaping machine set, and whole injection efficiency is high,
The switching control of injecting method and rotary valve station is simple, and injection molding quality is high.
Detailed description of the invention
Fig. 1 is the structural block diagram of extrusion foaming injection (mo(u)lding) machine of the present invention；
Fig. 2 is the structural schematic diagram of extrusion foaming injection (mo(u)lding) machine of the present invention；
Fig. 3 is the enlarged drawing of I in Fig. 2；
Fig. 4 is the enlarged drawing of II in Fig. 2；
Fig. 5 is the structural schematic diagram of extrusion foaming injection (mo(u)lding) machine rotary valve of the present invention；
Wherein: 1 being feeding unit, 2 be rotary valve, 3 be the first injection cylinder, 4 be the second injection cylinder, 5 be injection canal, 6 be
Rotary valve body, 7 be rotary valve axis, 8 be the first discharge port, 9 be feed inlet, 10 be the second discharge port, 11 be workbench, 12 be rack gear
Seat, 13 be drive rack, 14 be transmission gear, 15 be drive cylinder, 16 be spacer pin, 17 be the first limit shelves, 18 be second
Limit shelves, 19 be double screw extruder, 20 be single screw extrusion machine, 21 be nozzle, 22 be the first injection molding, 23 be the second note
Penetrate mold, 24 be pressure sensor, 25 be feeding port, 26 be carbon dioxide mouth, 27 be end cap, 28 be heat insulation, 29 be
Heating plate, 30 be transfer block, 31 be connecting tube, 32 be first passage, 33 be second channel, 34 be injecting cavity, 35 be injection rod,
36 be sealing ring.
Specific embodiment
Refering to fig. 1~Fig. 5, the present invention provide a kind of extrusion foaming injection (mo(u)lding) machine and injecting method, injection (mo(u)lding) machine packet
It includes: feeding unit 1, the rotary valve 2 being connect with feeding unit 1 and the first injection cylinder 3 being connect respectively with rotary valve 2 and the second injection
Cylinder 4；
Rotary valve 2 includes the first station and second station, high pressure mixing when rotary valve 2 is in the first station, in feeding unit 1
Injection canal 5 of the material through rotary valve 2, which is injected into the first injection cylinder 3, carries out storing；When rotary valve 2 is in second station, high pressure mixing
Material is injected into the second injection cylinder 4 through injection canal 5 carries out storing, and the first injection cylinder 3, the second injection cylinder 4 and injection canal 5 begin
It is in high pressure conditions eventually.By rotary valve 2 in the switching of the first station and second station, can recycle to the first injection cylinder 3 and
Two injection cylinders 4 carry out storing, and while the second 4 storing of injection cylinder, the first injection cylinder 3 can carry out injection molding processing；In
While first 3 storing of injection cylinder, the second injection cylinder 4 can carry out injection molding processing, and in whole process, feeding unit 1 begins
State eventually in continuous operation work, can uninterruptedly recycle and carry out storing to the first injection cylinder 3 and the second injection cylinder 4, turn
Valve 2, the first injection cylinder 3, the second injection cylinder 4 are in high pressure conditions always, can prevent internal mixture from foamed phenomenon occur,
There are two injection cylinders for setting, carry out interval injection molding, improve the efficiency of injection (mo(u)lding) machine injection molding.
Refering to Fig. 3 and Fig. 5, rotary valve 2 is set including rotary valve body 6 and the rotary valve axis 7 being sleeved on rotary valve body 6, injection canal 5
It sets on rotary valve axis 7；Rotary valve body 6 includes the first discharge port 8 of the first injection cylinder 3 of connection, the feed inlet 9 for connecting feeding unit 1
And the second discharge port 10 of the second injection cylinder 4 of connection；Refering to Fig. 3, when rotary valve 2 is in the first station, injection canal 5 respectively with
Feed inlet 9 and the first discharge port 8 are conducted, and the high pressure mixing material in feeding unit 1 is injected into the first note through injection canal 5 at this time
It penetrates and carries out storing in cylinder 3；When rotary valve axis 7 is in second station, injection canal 5 respectively with 10 phase of feed inlet 9 and the second discharge port
Conducting, the high pressure mixing material in feeding unit 1 is injected into the second injection cylinder 4 through injection canal 5 and carries out storing at this time.
Refering to Fig. 3, the cross sectional shape of injection canal 5 is in turning shape, and the first discharge port 8 and the second discharge port 10 are symmetrically to set
It sets in 6 two sides of rotary valve body, 90 ° of rotation rotary valve axis 7, rotary valve 2 is from the first Switch of working position to second station.
Refering to Fig. 2 and Fig. 5, rotary valve 2 is mounted on external workbench 11, and 11 bottom of workbench is equipped with 12 He of rack gear seat
Drive rack 13 is equipped with the transmission gear 14 engaged with drive rack 13 on rotary valve axis 7, referring to Fig.2, installing on workbench 11
There is the drive cylinder 15 connecting with drive rack 13；It is provided with spacer pin 16 on rotary valve body 6, is correspondingly arranged on rotary valve axis 7
One limit shelves 17 and the second limit shelves 18；When rotary valve 2 is in the first station, spacer pin 16 is resisted against on the first limit shelves 17；Turn
When valve 2 is in second station, spacer pin 16 is resisted against on the second limit shelves 18；Rotary valve axis 7 is fixed by end cap 27 and locking nut
Position is equipped with heat insulation 28, heating plate 29 is equipped on the outside of rotary valve body 6 on rotary valve body 6 between workbench 11 and rotary valve body 6,
Multiple groups sealing ring 36 is installed, refering to Fig. 5, in the present embodiment, sealing ring 36 is set as 2 groups between rotary valve body 6 and rotary valve axis 7
Totally 4.
Referring to Fig.2, the first injection cylinder 3 connects the first injection molding 22 by nozzle 21；Second injection cylinder 4 passes through nozzle 21
The second injection molding 23 is connected, the first injection molding 22 is identical with the structure of the second injection molding 23；First injection cylinder 3 and second
The structure of injection cylinder 4 is identical, and the pressure sensing for detecting pressure is separately installed on the first injection cylinder 3 and the second injection cylinder 4
Device 24.When rotary valve 2 is in second station, high pressure mixing material is injected into the second injection cylinder 4 through injection canal 5 and carries out storing, this
When the first injection cylinder 3 internal high pressure mixing material is injected into the first injection molding 22 by nozzle 21 carries out injection molding and add
Work；Corresponding, when rotary valve 2 is in the first station, high pressure mixing material is injected into the first injection cylinder 3 through injection canal 5 and is stored up
Material, internal high pressure mixing material is injected into the second injection molding 23 by nozzle 21 and is molded by the second injection cylinder 4 at this time
Processing and forming, whole injection molding it is high in machining efficiency.
Refering to Fig. 2 and Fig. 4, one end of the second injection cylinder 4 is equipped with transfer block 30 and connecting tube 31, setting in transfer block 30
There are first passage 32 and second channel 33；32 one end of first passage is connected to the injecting cavity 34 of the second injection cylinder 4, and the other end passes through company
Adapter tube 31 is connected to the second discharge port 10；Injection rod 35 is installed, nozzle 21 is mounted in transfer block 30, and second is logical in injecting cavity 34
Road 33 is connected to nozzle 21 and injecting cavity 34；Always high pressure conditions are in inside transfer block 30 and connecting tube 31.
Refering to fig. 1 and Fig. 2, feeding unit 1 include double screw extruder 19 and single screw extrusion machine 20, single screw extrusion machine
The feed inlet 9 of 20 connection rotary valves 2；The feeding port 25 connecting with external screw feeding machine is provided on double screw extruder 19,
Carbon dioxide mouth 26 is additionally provided on double screw extruder 19.
Wherein, the present embodiment also provides a kind of injecting method of extrusion foaming injection (mo(u)lding) machine, includes the following steps:
Step 1: inject raw material in the double screw extruder 19 of injection (mo(u)lding) machine, overcritical gas injection system injection CO2 with
Raw material mixing, mixture successively through double screw extruder 19 and single screw extrusion machine 20, are injected into the rotary valve 2 of injection (mo(u)lding) machine
It is interior；
Step 2: control rotary valve 2 is in the first station, and the mixture of high temperature and pressure is injected into through the injection canal 5 of rotary valve 2
Storing is carried out in first injection cylinder 3 of injection (mo(u)lding) machine；
Step 3: the rotary valve axis 7 of 90 ° of rotation rotary valves 2 is at second station, and the mixture of high temperature and pressure is through rotary valve
The injection canal 5 of axis 7 is injected into the second injection cylinder 4 of injection (mo(u)lding) machine and carries out storing；
Step 4: the nozzle 21 on the first injection cylinder 3 is opened, and the mixture of the high temperature and pressure of internal reservoir is injected to
It penetrates on the first injection molding 22 of molding machine, then cooling and demolding completes primary injection molding；
Step 5: the rotary valve axis 7 of 90 ° of opposite direction rotation rotary valves 2 makes it be in the first station again, and high temperature and pressure is mixed
Injection canal 5 of the conjunction material through rotary valve axis 7, which is injected into the first injection cylinder 3 of injection (mo(u)lding) machine, carries out storing；
Step 6: the nozzle 21 on the second injection cylinder 4 is opened, and the mixture of the high temperature and pressure of internal reservoir is injected to
It penetrates on the second injection molding 23 of molding machine, then cooling and demolding completes primary injection molding；
Step 7: step 3 is repeated to step 6.High temperature and pressure in double screw extruder 19 and single screw extrusion machine 20
Mixture can be implanted sequentially through rotary valve 2 to the first injection cylinder 3 and the second injection cylinder 4 incessantly, and whole injection efficiency is high.
Further, in step 3, drive rack is driven by the drive cylinder 15 under injection moulding machine worktable 11
13 and rotary valve axis 7 on transmission gear 14, thus control rotary valve axis 7 rotation, make rotary valve 2 from the first Switch of working position to the second work
Position.
The present embodiment extrusion foaming injection (mo(u)lding) machine is provided with rotary valve and two injection cylinders, passes through the first station of rotary valve and
The switching of two stations enables extruder to recycle and successively carries out storing into two injection cylinders incessantly, can remain
It is in high pressure conditions inside injection cylinder and inside rotary valve, is not in foamed phenomenon inside molding machine, whole injection efficiency is high,
Injecting method is simple, and the switching control of rotary valve station is convenient, and injection molding quality is high.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of extrusion foaming injection (mo(u)lding) machine characterized by comprising feeding unit (1) connects with the feeding unit (1)
The rotary valve (2) connect and the first injection cylinder (3) and the second injection cylinder (4) that are connect respectively with the rotary valve (2)；
The rotary valve (2) includes the first station and second station, when the rotary valve (2) is in first station, the feeding
Injection canal (5) of the high pressure feedstock through the rotary valve (2) in unit (1) is injected into first injection cylinder (3) and is stored up
Material；When the rotary valve (2) is in the second station, high pressure feedstock is injected into second injection through the injection canal (5)
Storing is carried out in cylinder (4), first injection cylinder (3), second injection cylinder (4) and the injection canal (5) are in always
High pressure conditions.
2. extrusion foaming injection (mo(u)lding) machine as described in claim 1, which is characterized in that the rotary valve (2) includes rotary valve body (6)
And it is sleeved on the rotary valve axis (7) on the rotary valve body (6), the injection canal (5) is arranged on the rotary valve axis (7)；Institute
State the charging that rotary valve body (6) include the first discharge port (8) for connecting first injection cylinder (3), the connection feeding unit (1)
Mouth (9) and the second discharge port (10) of connection second injection cylinder (4)；When the rotary valve (2) is in first station,
The injection canal (5) is conducted with the feed inlet (9) and first discharge port (8) respectively；The rotary valve axis (7) is in
When the second station, the injection canal (5) is conducted with the feed inlet (9) and second discharge port (10) respectively.
3. extrusion foaming injection (mo(u)lding) machine as claimed in claim 2, which is characterized in that the section shape of the injection canal (5)
Shape is in turning shape, and 90 ° of rotation rotary valve axis (7), the rotary valve (2) is from first Switch of working position to the second station.
4. extrusion foaming injection (mo(u)lding) machine as claimed in claim 2, which is characterized in that the rotary valve (2) is mounted on external
On workbench (11), workbench (11) bottom is equipped with rack gear seat (12) and drive rack (13), on the rotary valve axis (7)
The transmission gear (14) engaged with the drive rack (13) is installed, is equipped with and the sliding tooth on the workbench (11)
The drive cylinder (15) of item (13) connection；It is provided with spacer pin (16) on the rotary valve body (6), it is corresponding on the rotary valve axis (7)
It is provided with the first limit shelves (17) and the second limit shelves (18)；When the rotary valve (2) is in the first station, the spacer pin (16)
It is resisted against in first limit shelves (17)；When the rotary valve (2) is in second station, the spacer pin (16) is resisted against described
In second limit shelves (18)；The rotary valve axis (7) is located on the rotary valve body (6) by end cap (27) and locking nut, institute
It states and is equipped between workbench (11) and the rotary valve body (6) heat insulation (28), heating plate is installed on the outside of the rotary valve body (6)
(29), multiple groups sealing ring (36) are installed between the rotary valve body (6) and the rotary valve axis (7).
5. extrusion foaming injection (mo(u)lding) machine as claimed in claim 4, which is characterized in that first injection cylinder (3) passes through spray
Mouth (21) connects the first injection molding (22)；Second injection cylinder (4) passes through nozzle (21) connection the second injection molding (23)；
First injection cylinder (3) is identical with the structure of second injection cylinder (4), first injection cylinder (3) and second note
Penetrate the pressure sensor (24) being separately installed on cylinder (4) for detecting pressure.
6. extrusion foaming injection (mo(u)lding) machine as claimed in claim 5, which is characterized in that one end of second injection cylinder (4)
Transfer block (30) and connecting tube (31) are installed, are provided with first passage (32) and second channel in the transfer block (30)
(33)；Described first passage (32) one end is connected to the injecting cavity (34) of second injection cylinder (4), and the other end passes through the connection
It manages (31) and is connected to second discharge port (10)；It is equipped with injection rod (35) in the injecting cavity (34), nozzle (21) peace
On the transfer block (30), the second channel (33) is connected to the nozzle (21) and the injecting cavity (34).
7. such as extrusion foaming injection (mo(u)lding) machine as claimed in any one of claims 1 to 6, which is characterized in that the feeding unit (1)
Including double screw extruder (19) and single screw extrusion machine (20), the single screw extrusion machine (20) connects the rotary valve (2)
Feed inlet (9)；The feeding port (25) connecting with external screw feeding machine is provided on the double screw extruder (19), it is described
Carbon dioxide mouth (26) are additionally provided on double screw extruder (19).
8. a kind of injecting method of extrusion foaming injection (mo(u)lding) machine, which comprises the steps of:
Step 1: raw material is injected in the double screw extruder (19) of injection (mo(u)lding) machine, overcritical gas injection system injection CO2 and original
Material mixing, mixture successively through double screw extruder (19) and single screw extrusion machine (20), are injected into the rotary valve of injection (mo(u)lding) machine
(2) in；
Step 2: the rotary valve (2) are controlled and are in the first station, the mixture of high temperature and pressure is logical through the injection of the rotary valve (2)
Road (5), which is injected into the first injection cylinder (3) of injection (mo(u)lding) machine, carries out storing；
Step 3: the rotary valve axis (7) of 90 ° of rotation rotary valves (2) is at second station, the mixture warp of high temperature and pressure
The injection canal (5) of the rotary valve axis (7), which is injected into the second injection cylinder (4) of injection (mo(u)lding) machine, carries out storing；
Step 4: the nozzle (21) on first injection cylinder (3) is opened, and the mixture of the high temperature and pressure of internal reservoir is injected
To the first injection molding (22) of injection (mo(u)lding) machine；
Step 5: 90 ° of opposite directions rotate the rotary valve axis (7) of the rotary valve (2), it is made to be in the first station, high temperature and pressure again
Mixture be injected into the first injection cylinder (3) of injection (mo(u)lding) machine and stored up through the injection canal (5) of the rotary valve axis (7)
Material；
Step 6: the nozzle (21) on second injection cylinder (4) is opened, and the mixture of the high temperature and pressure of internal reservoir is injected
To the second injection molding (23) of injection (mo(u)lding) machine；
Step 7: step 3 is repeated to step 6.
9. the injecting method of extrusion foaming injection (mo(u)lding) machine as claimed in claim 8, which is characterized in that in the step 3
In, it is driven on drive rack (13) and the rotary valve axis (7) by the drive cylinder (15) under injection moulding machine worktable (11)
Transmission gear (14) make the rotary valve (2) from the first Switch of working position to the second work to control the rotary valve axis (7) rotation
Position.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085079A (en) * | 2021-04-14 | 2021-07-09 | 上海德琚自动化科技有限公司 | Combined high-speed low-pressure injection molding system and control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174605Y (en) * | 1993-10-09 | 1994-08-17 | 北京市北分色谱仪器技术公司 | Plane revoluting multi-purpose switching valve |
| US20030164579A1 (en) * | 2002-01-15 | 2003-09-04 | Krauss-Maffei Kunststofftechnik Gmbh | Method of making impact-resistant modified thermoplastic materials |
-
2018
- 2018-05-14 CN CN201810456972.XA patent/CN110480917A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174605Y (en) * | 1993-10-09 | 1994-08-17 | 北京市北分色谱仪器技术公司 | Plane revoluting multi-purpose switching valve |
| US20030164579A1 (en) * | 2002-01-15 | 2003-09-04 | Krauss-Maffei Kunststofftechnik Gmbh | Method of making impact-resistant modified thermoplastic materials |
Non-Patent Citations (1)
| Title |
|---|
| 吴舜英等: "《泡沫塑料成型》", 31 March 1992, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085079A (en) * | 2021-04-14 | 2021-07-09 | 上海德琚自动化科技有限公司 | Combined high-speed low-pressure injection molding system and control method thereof |
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